Wag on-jack



Patented Apr. II, |899.

M. H. TYLER.

WAGON JACK.

(Application led .Tun 7, 1898. j

(N o M o d e I lilik plm lllll ."Ulll m: Nonms rnzns w. PHoaLrmo.,WASHINGTON, u4 c UNITED STATES PATENT OFFICE.

MELVIN H. TYLER, OF MUNCIE, INDIANA.

WAGON-JAC K.

SPECIFICATION forming part of Letters Patent No. 623,050, dated April11, 1899.

Application filed June 7, 1898. Serial No. 682,852. (No model.)

To @ZZ whom, it nur/y concern:

Beit known thatl, MELVIN H. TYLER,a citi- Zen of the United States,residing at Muncie,

y in the county of Delaware and State of Indiana, have invented a newand useful Wagon- Jack, of which the followin gis a specification.

This invention relates to lifting-jacks'of that class embodying astandard and a telescoping lifting-rod, having an operating-leverconnected with the lifting-rod and provided with a movable fulcrummounted upon the standard. v

'The object of the present invention is to provide certain new anduseful improvements in the construction and mounting of the severalparts of a device of this class.

The special features and peculiar advantages of my improvements will behereinafter more fully described, shown in the drawings, andparticularly pointed out in the appended claims. A

In the drawings, Figure 1 is a perspective view of my device with thelifting-rod elevated. Fig. 2 is a longitudinal sectional view with thelever in position to adjust upon the standard. Fig. 3 is a sideelevation, parts being broken away to show the manner 'of locking thefulcrum-ring. Fig. 4 is a det-ail perspective view of the fulcrum-ring.

Corresponding parts in the several figures l are denoted by likecharacters of reference.

Referring to the drawings, 1 designates a tubular standard supported ona base 2 and incasing the lifting-rod 3, which carries at its upper enda lifting-head 4, and the standard is further provided with a rack 5,arranged upon its rear side, preferably extending the full lengththereof.

Encircling the standard is afulcrum-ring 6, carrying the operating-lever7. The lever is fastened to two side arms 8, which are pivotedto thering 6 by means of pins 9, formed at each .side of the ring and disposedat the rear thereof, and the other ends of the arms 8 are pivoted toconnecting-arms 10, as at 1l, which are in turn pivoted to thelifting-rod, as at 12. The side arms 8 are each formed with anarm 22,arranged at approximately right angles thereto and at the inner endthereof, providing a bell-crank lever. This construction andarrangement, it will be readily understood, forms a toggle connectionbetween the operating-lever and the liftingrod,with the fulcru m-ring 6as a support therefor. The ring 6 is provided with an upright arm 13 atthe rear side thereof, having a slot Aor groove 14in its inner face,which is adapted to receive the rack 5 and 'is reduced in width, as at23. The lever 7has a notch 15 formed in the upper face and at the innerend thereof to accommodate a spring 16, which is suitably secured in thenotch and is i formed by bending the spring upon itself,

providing the spring-arm 17, which is deflected somewhat at its outerend and notched, forming apair of fingers 18. The spring-arm '17 extendsonly part of the length of the not-ch 15, thereby leaving room for thereduced part 23 of the arm 13 to be seated therein when the lever israised. The fingers 18 will engage the top of the arm 13, and therebylock the fulcrum-ring and operating-lever too gether, and by reason ofthe space or notch between the fingers will not interfere with the rack.

The lower ends of the connecting-arms lO are joined together by means ofan approxi- Y mately semicircular band 19. This band is preferablyformed integral with the arms, or it might be separate and connectedwith the free arms of the bell-cranks.

The lifting-head 4 is formed with the flat head having a threadedshank-20 fitting within the collar 21, which in turn is screwed upon thelifting-rod 3. A suitable cap or nut 24 is screwed or fitted upon theupper end of the tubular standard 1 to give a finished appearancethereto. The pivot-bolt 12, connecting the arms 10 with thelifting-rod,passes through the head and the collar 21, which firmlysecures `the two together and prevents them from coming loose.

In operating my device the lever is elevated until the fingers 18 of thespring 16 engage with the top of the arm 13, locking the lever and thering 6 together, and as the lever is further elevated the ring is tiltedforward until the arm 13 is brought alongside of the standard with thegroove 14, receiving the rack, as shown in Fig. 2, and in this positionthe device may be readily adjusted. When IOO pressed, carrying the arm13 therewith, which seats the ring upon one of the notches, therebyholding the ringr stationary, an'd as the lever is further depressed thespring is released from the arm 13, and the rod 3 is elevated by `actionof the toggle connection between the lever and the lifting-rod. The band12') contacts with the front of the standard l and prevents the pivot llfrom being thrown too far beyond the line of the pivot-points 9 and l2,thus automatically locking the lifting-jack in its elevated position.

My invention is formed from metal, with the exception oftheoperating-lever,-Which is preferably of wood, and the parts thereof arefew in number, being compactly and substantially assembled together intoa useful and improved jack.

Various changes in the form, proportion, and minor details thereof maybe made Without departing` from the spirit and scope or sacrificing anyof the advantages of a device constructed in accordance with myinvention, and therefore I do not' wish to be understood as limitingmyself to the precise construction and arrangement of paris as hereinshown and described.

Having thus described the invention, what is claimed, and desired to besecured by Let-l ters Patent, is-

l. In a lifting-jack, the combination with a tubular standard, and atelescopic lifting-rod, an adjustable fulcrum-ring mounted loosely andcapable of sliding upon and adapted to engage the standard, and anoperating-lever pivoted upon the fulcrum-ring and having a pivotalconnection with the lifting-rod, substantially as shown and described.

2. In a lifting-jack, the combination with a tubular standard'having arack thereon and a lifting-rod telescoping therein, of an adjustablefulcrum-ring mounted loosely upon the standard and adapted to engage therack, an operating-lever pivoted to the fulcrum-ring, andconnecting-arms pivoted to the lever at one end and to the lifting-rodat the other end thereof, substantially as shown and described.

In a lifting-jack, the combination with a tubular standard having a rackand a liftingrod telescoping therein, of an adjustable fulcrum-rin gmounted loosely upon the standard and adapted to engage the rack andhaving an angle-arm extension, an operating-lever pivoted to the ringand provided with a clip adapted to engage With the arm or the ful-Crum-rin g, and arms pivotally connecting the lever with thelifting-rod, substantially as arm of the fulcruni-ring, and armsconnecting the lifting-rod and the lever, substantially as shown anddescribed.

5. In a lifting-jack, the combination with a tubular standard having arack thereon and a lifting-rod telescoping therein, of an adjustablefulcrum-ring mounted loosely upon the standard and adapted to engage therack, an

operating-lever pivoted to the fulcrum-ring and carrying a clip or catchadapted toengage the fulcrum-ring and hold the same out of engagementWith the rack, and connectingarms pivoted to the lever at one end and tothe lifting-rod at the other end thereof, substantially as shown anddescribed.

6. In a lifting-jack, the combination of a standard carrying alifting-rod, an adjustable ful'crum-ring mounted looselyupon and adaptedto engage the standard, an operatinglever pivoted upon thefulcrum-ring,and arms pivotally connecting the lever With theoperating-rod, and means carried by the lever and adapted to engage thefulcrum-ring and lock the same together at a certain point in themovement of the lever,substantially as shown and described.

7. In a lifting-jack, the combination With a tubular standard having arack provided thereon, and a lifting-rod telescoping therein, of anadjustable f ulcrum-rin g mounted loosely upon the standard and providedwith an angle-arm formed With a groove in the inner face thereof, saidfulcrum-ring being adapted to engage the rack, an operating-leverVhaving approximately L-shaped arms pivoted -upon the fulcrum-ring, andprovided` with a notch or recess formed in the upper face of the leverand adapted to receive the arm upon the fulcrum-ring, a spring seated insaid recess and adapted to engage the arm of the fulcrumring, andconnecting-arms pivoted to the free ends of the L-shaped arms at one-endand to the lifting-rod at thev other end thereof, sub stantially asshown and described.

8.v In a lifting-jack, the combination With a tubular standard and atelescopic lifting-rod, of a fulcrum-ring loosely mounted upon andadapted to engage the standard, an operatinglever pivoted upon thefulcrum-rin g and having a pivotal connection with the lifting-rod, anda band connected to the inner end of the lever and embracing thestandard, whereby the lever is limited in its movement, substantially asand for the purpose set forth.

9. In a lifting-jack, the combination with a tubular standard and atelescopic lifting-rod, of a fulcrum-ring'loosely mounted upon and Shownand described.

4. In a lifting-jack, the combination with a tubular standard having arack provided thereon and a lifting-rod telescoping therein,

of an adjustable fulcrum-ring mounted loosely upon the standard,and-provided with an an? gie-arm formed with a groove in the inner facethereof, said f ulcrum-ring being adapted to engage the rack, anoperating-lever provided with` a spring-clip adapted to engage with theadapted to engage the standard, an operatinglever pivoted upon thefulcrum-rin g, and connecting-arms pivoted upon the lever and to thelifting-rod and having a band connected to the lowerends thereof andembracing the standard, whereby the lever is limited in its movement,substantially as and for the purpose set forth.

10. In alifting-jack the combination with a tubular standard and atelescopic lifting-rod,

ICO

IIO

of a fulerum-ring loosely mounted upon and stop and limiting themovement of the lever, adapted to engage the standard, an operatingsubstantially as and for the purpose set forth. lever-havingapproximately L-shaped arms, In testimony that I claim the foregoing asthe latter being pivotedto the fulorum-ring my own I have hereto ailXedmy signature in 5 at thevertex of the angle thereof, and eonthe presenceof two witnesses.

neeting-arms pivoted to the lifting-rod at one p' y l i end and to thefree ends ofthe L-shaped arms MELVIN H TYLER at the other end andprovided With a band Witnesses: connecting the lower extremities thereofand C. B. TEMPLER,

1o embracing the standard, thereby forming a E. F. SMITH.

